Gaza (Arabic: غزة, Hebrew: עזה ) is a Palestinian city in the Gaza Strip, approximately southwest of Jerusalem, with a population of 410,000, making it the largest city under the control of the Palestinian National Authority. Inhabited since at least the 15th century BCE, Gaza has been dominated by several different peoples and empires throughout its history. The Philistines made it a part of their pentapolis after the Ancient Egyptians had ruled it for nearly 350 years. Under the Romans and later the Byzantines, Gaza experienced relative peace and its port flourished. In 635, it became the first city in Palestine to be conquered by the Rashidun army and quickly developed into a center of Islamic law. However, by the time the Crusaders invaded the city, it was in ruins. In later centuries, Gaza experienced several hardships from Mongol raids to floods and locusts, reducing it to a village by the 16th century when it was incorporated into the Ottoman Empire. During the first half of Ottoman rule, the Ridwan dynasty controlled Gaza and under them the city went through an age of great commerce and peace.